CN103064723A - Method and computer system for identifying virtual machine memory - Google Patents
Method and computer system for identifying virtual machine memory Download PDFInfo
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- CN103064723A CN103064723A CN2011104300849A CN201110430084A CN103064723A CN 103064723 A CN103064723 A CN 103064723A CN 2011104300849 A CN2011104300849 A CN 2011104300849A CN 201110430084 A CN201110430084 A CN 201110430084A CN 103064723 A CN103064723 A CN 103064723A
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- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
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- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
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- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
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Abstract
A method for identifying a virtual machine memory is used for executing an operating system on a computer system executing at least one virtual machine. The identification method comprises the following steps. Obtaining the kernel file of the operating system, wherein the kernel file comprises the version information of the operating system. And acquiring the source code and the configuration file of the operating system according to the version information. The versions of the source code and the configuration file conform to the version of the operating system. The fixed interface function is compiled with the source code to generate an object file according to the configuration file. Memory pages on a virtual machine are identified from an object file.
Description
Technical field
The disclosure relates to a kind of virtual machine storer appreciation method and its computer system that is applicable to various operating system versions.
Background technology
Along with the cost of computer hardware device more and more reduce and the demand of large-scale servomechanism more and more higher, virtual machine (Virtual Machine) also more and more is taken seriously.Virtual machine is a kind of interface, be applied between a software and the computer system, and the various resources that this computer system can be provided is to above-mentioned software application.This software is generally an operating system, and therefore, operating system can be come resource in the accessing computer system by virtual machine.Yet, on a computer system, a plurality of virtual machines can be installed, on each virtual machine different operating system can be installed.For instance, the windows operating system of Microsoft just can be installed in the virtual machines different on the computer system simultaneously from linux operating system.
Because the coupled relation on the virtual machine between operating system and the computer system is lightened restrictions on, and the locked memory pages on the virtual machine in operating system management, therefore the virtual machine watchdog routine (virtual machine monitor, VMM) on the computer system is not easy to obtain the use state of locked memory pages on the virtual machine.But among some were used, the access of locked memory pages but was necessary on these virtual machines.For example, when sharing the locked memory pages on the different virtual machine, need to detect the use state of these locked memory pages, or will detect this operating system and whether invaded by internet worm the time, need to whether trusty from the data that the level of virtual machine comes these locked memory pages of appreciation to store.A kind of practice is that the version information with operating system writes to VMM, and comes locked memory pages on the analyzing virtual machine according to this version information.But thus, when the version updating of operating system or new operating system and virtual machine when moving from other computer systems, with the version information of renewal operating system that must be manual, very consuming time.Therefore how to develop a virtual machine storer appreciation method that can be applicable to various operating system versions, for this reason the problem be concerned about of area research personnel.
Summary of the invention
The disclosure provides a kind of appreciation method of virtual machine storer, can be applicable to various operating system versions.
The disclosure provides a kind of computer installation, and the storer of energy appreciation virtual machine also is applicable to various operating system versions.
The disclosure provides a kind of appreciation method of virtual machine storer, is used for carrying out on the computer system of at least one virtual machine and virtual machine execution one operating system.This appreciation method may further comprise the steps.Obtain the kernel file of aforesaid operations system, comprise the version information of this operating system in this kernel file.Obtain at least one source code (source code is referred to as again " source code ") and configuration file (configuration file is referred to as again " enactment document ") of operating system according to this version information.The version of source code and configuration file meets the version of operating system.According to above-mentioned configuration file the fixed interface function is compiled to produce at least one object file (object file is referred to as again the object file) with source code.Come locked memory pages on the appreciation virtual machine according to obj ect file.
With the another one angle, the disclosure proposes a kind of computer system, is used for carrying out at least one virtual machine, and carries out an operating system on the virtual machine.This computer system comprises a memory cell, an operating system version control module and a processing unit.Memory cell has comprised a plurality of physical memory pages.And the operating system version control module is coupled to memory cell, and in order to obtain the kernel file of operating system, this kernel file comprises the version information of operating system.And the operating system version control module is obtained at least one source code and the configuration file of operating system according to this version information, and the version of this source code and configuration file meets the version of operating system.And the operating system version control module compiles produce at least one object file with the fixed interface function with above-mentioned source code according to above-mentioned configuration file.Processing unit is coupled to above-mentioned memory cell and operating system version control module, in order to according to the locked memory pages on the above-mentioned obj ect file appreciation virtual machine.
Based on above-mentioned, the disclosure proposes a kind of appreciation method and computer system of virtual machine storer, its version according to operating system is obtained operating system source code and the configuration file of this version, and according to this configuration file this source code is compiled with a fixed interface function, so that the obj ect file that produces has the information of current operation system version.Thus, the disclosure is just applicable to the operating system of different editions and the locked memory pages on the energy appreciation virtual machine.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate accompanying drawing to be described in detail below.
Description of drawings
The computer system calcspar of Fig. 1 for illustrating according to the disclosure one embodiment.
Fig. 2 is the computer system that illustrates according to the disclosure one embodiment and the schematic diagram of virtual machine.
Fig. 3 is the process flow diagram of the storer appreciation method that illustrates according to one embodiment of the invention.
Fig. 4 compiles the schematic diagram of flow process for the obj ect file that is applicable to each operating system version according to the disclosure one embodiment explanation.
Fig. 5 is the program code of the fixed interface function 440 that illustrates according to the disclosure one embodiment.
Fig. 6 is the program code of the subroutine 480 that illustrates according to the disclosure one embodiment.
[main element symbol description]
100: computer system
140: memory cell
142: physical storage
160: the operating system version control module
180: processing unit
220: the virtual machine watchdog routine
230,240: virtual machine
232,242: memory paging
250,260: operating system
262,252: the virtual memory paging
254,264: memory map
234,244: the first free page
S302, S304, S306, S308: the step of virtual machine storer appreciation method
420: source code
422: the gauge outfit file
424: the implementation program code
440: the fixed interface function
460: obj ect file
480: subroutine
482: the subroutine obj ect file
484: main execute file
Embodiment
The computer system calcspar of Fig. 1 for illustrating according to the disclosure one embodiment.
Please refer to Fig. 1, computer system 100 comprises a memory cell 140, an operating system version control module 160 and a processing unit 180.
Operating system version control module 160 is coupled to memory cell 140, in order to obtaining the version information of operating system, and produces the file that can be applicable to each operating system version.Operating system version control module 160 for example is microprocessor (microprocessor), in order to carry out the program code in the nonvolatile memory (not illustrating).
In the present embodiment, carried out two virtual machines on the computer system 100, and carried out an operating system on each virtual machine.Please refer to Fig. 2, Fig. 2 is the computer system that illustrates according to the disclosure one embodiment and the schematic diagram of virtual machine.Virtual machine watchdog routine (Virtual Machine Monitor, VMM) 220 is executed on the computer system 100, in order to control resources all on the computer system 100.Wherein the resource of computer system 100 comprises execution and the use of input and output (input output, the IO) devices (not illustrating) on processing unit 120, memory cell 140 or the computer system 100.In the present embodiment, VMM 220 has built virtual machine 230 and virtual machine 240, and virtual machine 230 and virtual machine 240 just can come by VMM 220 resource of the above-mentioned computer system 100 of access.Yet virtual machine watchdog routine 220 can provide number more or less virtual machine, and the disclosure does not limit the number of virtual machine.
VMM 220 can distribute to the resource on the computer system 100 virtual machine 230 and virtual machine 240.Take storer as example, VMM 220 distributes to virtual machine 230 and virtual machine 240 with the physical memory pages 142 in the memory cell 140, make to have comprised a plurality of locked memory pages 232 in the virtual machine 230, and make and comprised a plurality of locked memory pages 242 in the virtual machine 240.It should be noted that, locked memory pages 232 is visitor's end physical storage (guest physical memory) with locked memory pages 242, that is to say that locked memory pages 232 and locked memory pages 242 are not (entity) storer of physics, only corresponded to the virtual memory of physical memory pages 142.
On the other hand, operating system 260 has been installed on the virtual machine 230, and on the virtual machine 240 operating system 250 has been installed.Thus, the resource (for example, locked memory pages 232) of operating system 260 on just can access virtual machine 230, and the resource (for example, locked memory pages 242) of operating system 250 on just can access virtual machine 240.And also having comprised a plurality of page of virtual memory 262 in the operating system 260, operating system 260 is to come these page of virtual memory 262 of access with logical address (logical address).When operating system 260 usefulness logic address access page of virtual memory 262, this logical address can be operated the visitor that system 260 is converted to locked memory pages 232 and hold physical address (guest physical address), and VMM 220 is the physical address (physical address is referred to as again " provider location ") of physical memory pages 142 with this visitor's end physical address translations again.Operating system 260 is come access physical memory pages 142 by such transformational relation.Operating system 250 is also come access physical memory pages 142 by similar conversion with logical address, just repeats no more at this.
Memory map in the operating system 260 (memory map) 264 is then being deposited the use state of locked memory pages 232.In one embodiment, operating system 260 is (SuSE) Linux OS, and two memory modes are arranged in the (SuSE) Linux OS, be respectively flat memory pattern (flat memory model) and sparse storage device pattern (sparse memory model), under different patterns, can come the diode-capacitor storage page 232 with different modes.Under the flat memory pattern, memory map 264 is mem_map by name, represent the data structure that an array is arranged, element (element) in the array corresponds to locked memory pages 232 one of them locked memory pages, has comprised the behaviour in service of corresponding locked memory pages in this element.And under sparse storage device pattern, operating system 260 has comprised a plurality of memory segments (memory section), and each memory segments has each self-corresponding memory map 264.And each memory segments is separately independently, and the information of each memory segments then exists in the array of mem_section by name.After the kernel of operating system 260 was compiled, above-mentioned memory mode will be determined and can not changed again, and the information of memory mode then is stored in the configuration file (for example .config file).Operating system 260 is used the flat memory pattern in one embodiment, and operating system 250 is used sparse storage device pattern, so the data structure of memory map 264 is not identical with the data structure of memory map 254.Thus, VMM 220 just needs to read the information that above-mentioned configuration file is obtained memory mode.
In another embodiment, operating system 250 all is (SuSE) Linux OS with operating system 260, and use identical memory mode (for example, the flat memory pattern), so the data structure of memory map 264 is identical with the data structure of memory map 254.Yet, the version of operating system 250 is not identical with the version of operating system 260 so that in 254 li each elements of memory map in the meaning of the value representative of field (field) and 264 li each elements of memory map the meaning of the value representative of field incomplete same.Specifically, Linux uses dual formula memory management algorithm (Buddy System Algorithm) to manage idle locked memory pages, claims that at this idle locked memory pages is free page (free page).Memory location for fear of free page is discontinuous, and continuous free page can be divided into a group, and the size of group is 2 power (for example, 32 or 64).First locked memory pages of each group is the antithesis page (buddy page), and uses the field (being referred to as again " field ") of a private by name to deposit the information of this group size.For instance, if in the group in the antithesis page numerical value of private field be n, represent that then this group has comprised 2
nIndividual continuous free page.Therefore, VMM 220 can obtain by the antithesis page of each group of appreciation the free page data structure of operating system storer.Yet, if the version of (SuSE) Linux OS is different, must reads different fields and come whether appreciation one locked memory pages is the antithesis page.For instance, memory map 254 is the array data structure of above-mentioned mem_map, and the element in the array corresponds to a locked memory pages 242, judge whether this locked memory pages is that the antithesis page then needs to inquire about stored data in the corresponding element.In the (SuSE) Linux OS version older than version 2 .6.18, if the 19th of the flags field the bit is 1 in this element, then this locked memory pages is the antithesis page; If but in version 2 .6.38, must inquire about the field of another by name _ mapcount in this element and judge whether this locked memory pages is the antithesis page.
In simple terms, in operating system 260 and operating system 250 setting of memory mode not simultaneously, memory map 264 is understood different with the data structure of memory map 254.Even and memory map 264 is identical with the data structure of memory map 254, when the version of operating system 260 and operating system 250 is not identical, also must come read memory mapping graph 264 and field information in the memory map 254 to come appreciation locked memory pages 232 and locked memory pages 242 with different modes.
Yet, among the (SuSE) Linux OS of different editions, the function of an int PageBuddy by name (struct page*) all is provided, the pointer that is input as struct page data structure (pointer) of this function, the data structure of struct page is then being deposited the information of corresponding locked memory pages, that is to say the pointer that is input as an element in the memory map of this function.And this function is output as whether the corresponding locked memory pages of expression is the integer of the antithesis page.In the (SuSE) Linux OS of different editions, this function that provides all has identical interface, but the implementation mode is different.Be to utilize this function that this characteristic of same-interface is arranged in the operating system of different editions in the present embodiment, come the locked memory pages on the appreciation virtual machine.It should be noted that, the kind that the disclosure does not limit operating system (for example, Linux or Windows), do not limit employed function yet, without departing from the spirit and scope of the present invention, can come with the function of other fixed interfaces in the operating system locked memory pages of appreciation virtual machine.
Fig. 3 is the process flow diagram of the storer appreciation method that illustrates according to the embodiment of the invention.Please be simultaneously with reference to Fig. 1 and Fig. 3.Below take operating system 260 as example, the flow process of appreciation locked memory pages 232 in the present embodiment is described.
In step S302, operating system version control module 160 is obtained the kernel file of operating system, comprises the version information of operating system in this kernel file.For instance; the kernel file of (SuSE) Linux OS 260 is kernel image files (kernel image) of vmlinux by name; this kernel image file comprises two parts, is respectively realistic model kernel image file (real-mode kernel image) and protected mode kernel image file (protected-mode kernel image).The version information that has wherein just comprised operating system 260 in the realistic model kernel image file.In more detail, because the file header (header) of realistic model kernel image file has all comprised the magic numeral (magic number) of content for " HdrS " in the (SuSE) Linux OS of different editions, therefore operating system version control module 160 can be searched each page of locked memory pages 232, find the realistic model kernel image file that comprises this magic numeral, and then obtain the version information of operating system 260.Yet the disclosure does not limit the mode that obtains the operating system nucleus file.
In step S304, the source code (source code) that operating system version control module 160 is obtained operating system 260 according to the version information of operating system 260 and configuration file are (for example, .config file), wherein the version of source code and configuration file meets the version of operating system 260.Comprise the implementation program code that meets each function in operating system 260 versions in the obtained source code, then comprised the memory mode of operating system 260 and the memory location information of memory map 264 in the configuration file.In one embodiment, operating system 260 is (SuSE) Linux OS, and operating system version control module 160 is after the version information of obtaining (SuSE) Linux OS 260, can download in the website of CentOS by name operating system source code and the configuration file of this version, this configuration file is the file of " config-start context " by name.In other embodiments, operating system version control module 160 can link to source code and the configuration file that a servomechanism comes the down operation system via Local Area Network, and the disclosure does not limit the method that obtains source code and configuration file.On the other hand, the source code of downloading and the version of configuration file meet the version of operating system 260, that is to say to comprise the function implementation program code that meets operating system 260 versions and int PageBuddy by name (struct page*) in the source code of downloading.
In step S306, operating system version control module 160 compiles produce obj ect file with the fixed interface function with source code according to obtained configuration file.Detailed content please refer to Fig. 4, and Fig. 4 is for being applicable to the obj ect file compiling schematic flow sheet of each operating system version according to the disclosure one embodiment explanation.Operating system version control module 160 has been obtained the source code 420 of operating system 260 at step S304, comprising gauge outfit file (head file) 422 and implementation program code 424.Gauge outfit file 422 has comprised interface and the declaration of each function, has wherein also comprised the declaration of function int PageBuddy (struct page*).Implementation program code 424 has then comprised the implementation program code of each function, has wherein also comprised the implementation program code of function int PageBuddy (struct page*).And fixed interface function 440 is functions of int GFN_is_Buddy (unsigned long) by name, wherein called out function int PageBuddy (struct page*), yet fixed interface function 440 can have other naming methods, and the disclosure does not limit its naming method.Operating system version control module 160 is that fixed interface function 440, gauge outfit file 422 and source code 424 are compiled together, in order to produce obj ect file 460, has comprised fixed interface function 440 in this obj ect file 460.In addition, when operating system version control module 160 compiles fixed interface function 440, gauge outfit file 422 and source code 424 together, also need the obtained configuration file of refer step S304 (for example, the .config file of operating system 260).Please refer to Fig. 5, Fig. 5 is the program code according to the disclosure one embodiment fixed interface function 440.The 5th line program code in fixed interface function 440 needs whether the memory mode of decision operation system 260 is the flat memory pattern, just need this moment with reference to the configuration file of operating system 260 (namely, .config the information that file), has wherein comprised operating system 260 memory modes.
Please refer to back Fig. 4, after operating system version control module 160 produces obj ect file 460, owing to having called out function int PageBuddy (struct page*) in the fixed interface function 440, therefore the implementation program code that has also comprised function int PageBuddy (struct page*) in the obj ect file 460, and the name of the function in the obj ect file 460 is identical with the name of fixed interface function 440.It should be noted that implementation program code 424 meets the version of operating system 260, that is to say the program code that has comprised how appreciation memory map 264 in the implementation program code 424.Thus, the obj ect file 460 that produces also meets the version of operating system 260, and can appreciation memory map 264.On the other hand, the name of fixed interface function 440 is just no longer change after determining, if therefore the version of operating system changes, as long as recompilate out obj ect file 460 according to above-mentioned steps, then the name of function can't change in the obj ect file 460, but has the implementation program code of different operating system version.Therefore the user does not need any program code of manual adjustment, the locked memory pages of virtual machine that just can appreciation different operating system version.
In step S308, processing unit 180 comes storer on the appreciation operating system according to obj ect file.Take operating system 260 as example, processing unit 180 is that int GFN_is_Buddy (unsigned long) function in the call object file 460 comes the locked memory pages 232 on the appreciation virtual machine 230 equally.That is to say, processing unit 180 can be by carrying out a program, and int GFN_is_Buddy (unsigned long) function of having called out in this program in the obj ect file 460 comes appreciation locked memory pages 232.
For instance, whether the function of call object file 460 in subroutine (being referred to as again " secondary program ") 480 is the antithesis page in order to one of them locked memory pages of judging locked memory pages 232.If so, then under the mark antithesis page locked memory pages in the group be free page.The content of subroutine 480 can be with reference to figure 6, and Fig. 6 is the program code of the subroutine 480 that illustrates according to disclosure embodiment.The letter that the 7th row in the subroutine 480 has just been called out int GFN_is_Buddy (unsigned long) shows, and subroutine 480 can produce subroutine obj ect file 482 later in compiling.On the other hand, comprised the function that int main by name () is arranged in the main execute file 484, int GFN_is_Buddy (unsigned long) letter of wherein having called out in the subroutine 480 shows.In addition, main execute file 484 has also comprised the information of memory map 264, so that processing unit 180 is being carried out main execute file 484, can come appreciation locked memory pages 232 according to memory map 264 and obj ect file 460.Specifically, processing unit 180 is in step S306, configuration file after compiling, source code can be obtained the file of system.map, processing unit can be obtained symbol table (symbol table) from system.map, and in symbol table, obtain the memory location of memory map 264, then obtain memory map 264 according to this memory location.And comprised also in the main execute file 484 that the information according to memory map 264 scans all locked memory pages 232, and judge according to obj ect file 460 whether locked memory pages is the program code of the antithesis page.When the main execute file 484 of processing unit 180 compilings, just subroutine obj ect file 482 and obj ect file 460 can be linked (link) together.When processing unit 180 is carried out main execute file 484, just can appreciation locked memory pages 232 and obtain the data structure of locked memory pages 232.
Yet in other embodiments, main execute file 484 is the function in the call object file 460 only, and does not call out subroutine obj ect file 482, and the disclosure does not limit processing unit 180 comes appreciation locked memory pages 232 according to obj ect file 460 mode.
On the other hand, in other embodiments, the obtained source code of step S304 can comprise a plurality of files (for example, a plurality of .c files).Therefore the obj ect file that produces at step S306 also comprises a plurality of files (for example, a plurality of .o files).The disclosure does not limit the number of above-mentioned source code and obj ect file.
Although above take operating system 260 as example, can produce obj ect file corresponding to operating system 250 according to above-mentioned steps for operating system 250, and come locked memory pages 242 in the appreciation virtual machine 240 according to this obj ect file.Detailed step has been described as above, just repeats no more at this.
In sum, in the disclosure, the appreciation method of virtual machine storer can obtain corresponding source code according to the operating system version of computer system, and the obj ect file that therefore produces includes the information of current operation system version, and function name is fixing in the obj ect file.Therefore when operating system version changes, as long as regenerate obj ect file, just can call out same function name, with by this under the current operation system version, the locked memory pages of appreciation virtual machine.That is to say, the user does not need manually to go to adjust any program code in the face of the operating system of different editions or when the version of operating system is changed.
Although the present invention with embodiment openly as above; so it is not to limit the present invention, those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is as the criterion when looking the appended claims person of defining.
Claims (12)
1. the appreciation method of a virtual machine storer is used for carrying out the computer system at least one virtual machine, and carries out an operating system on this at least one virtual machine, and this appreciation method comprises:
Obtain a kernel file of this operating system, wherein comprise a version information of this operating system in this kernel file;
Obtain at least one source code and a configuration file of this operating system according to this version information, wherein the version of this at least one source code and this configuration file meets the version of this operating system;
According to this configuration file one fixed interface function is compiled to produce at least one object file with this at least one source code; And
A plurality of locked memory pages according to this this at least one virtual machine of at least one object file appreciation.
2. appreciation method as claimed in claim 1, the step that wherein obtains this kernel file of this operating system comprises:
Obtain this kernel file by the magic numeral in these locked memory pages of seeking this at least one virtual machine.
3. appreciation method as claimed in claim 1, wherein obtain this at least one source code of this operating system according to this version information and the step of this configuration file comprises:
According to this version information, download this at least one source code and this configuration file that meets this operating system version from a website.
4. appreciation method as claimed in claim 1 also comprises:
Obtain the memory location of a memory map of this operating system from this configuration file, wherein this memory map comprises the behaviour in service of these locked memory pages in this at least one virtual machine; And
According to the memory location of this memory map, obtain this memory map.
5. appreciation method as claimed in claim 4, wherein the step according to these locked memory pages of this this at least one virtual machine of at least one object file appreciation comprises:
According to this memory map and this at least one object file, these locked memory pages of this at least one virtual machine of appreciation, and obtain the data structure of these locked memory pages.
6. appreciation method as claimed in claim 1, wherein this operating system is (SuSE) Linux OS, this fixed interface function has comprised int PageBuddy (the struct page of this operating system
*) function.
7. a computer system is used for carrying out at least one virtual machine, carries out an operating system on this at least one virtual machine, and this computer system comprises:
One memory cell includes a plurality of physical memory pages;
One operating system version control module is coupled to this memory cell; And
One processing unit is coupled to this memory cell and this operating system version control module;
Wherein, this operating system version control module is obtained a kernel file of this operating system, a version information that comprises this operating system on this kernel file, and obtain at least one source code and a configuration file of this operating system according to this version information, the version of this at least one source code and this configuration file meets the version of this operating system, and according to this configuration file one fixed interface function is compiled to produce at least one object file with this at least one source code, and this processing unit is according to a plurality of locked memory pages of this this at least one virtual machine of at least one object file appreciation.
8. computer system as claimed in claim 7, wherein when obtaining this kernel file of this operating system, this operating system version control module is obtained this kernel file by the magic numeral in these locked memory pages of seeking this at least one virtual machine.
9. computer system as claimed in claim 7, wherein when this at least one source code of obtaining this operating system according to this version information and this configuration file, this operating system version control module is downloaded this at least one source code and this configuration file that meets this operating system version according to this version information from a website.
10. computer system as claimed in claim 7, this processing unit is more obtained the memory location of a memory map of this operating system from this configuration file, wherein this memory map comprises the behaviour in service of these locked memory pages of this at least one virtual machine, and this processing unit is obtained this memory map according to the memory location of this memory map.
11. computer system as claimed in claim 10, wherein according to these locked memory pages of this this at least one virtual machine of at least one object file appreciation the time, this processing unit comes these locked memory pages of this at least one virtual machine of appreciation according to this memory map and this at least one object file, and obtains the data structure of these locked memory pages.
12. computer system as claimed in claim 7, wherein this operating system is (SuSE) Linux OS, and this fixed interface function has comprised int PageBuddy (the struct page of this operating system
*) function.
Applications Claiming Priority (4)
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| US201161548697P | 2011-10-18 | 2011-10-18 | |
| US61/548,697 | 2011-10-18 | ||
| TW100143979A TWI444824B (en) | 2011-10-18 | 2011-11-30 | Method for identifying memory of virtual machine and computer system using the same |
| TW100143979 | 2011-11-30 |
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| CN103064723A true CN103064723A (en) | 2013-04-24 |
| CN103064723B CN103064723B (en) | 2016-01-20 |
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| US20230134937A1 (en) * | 2020-04-24 | 2023-05-04 | Nec Corporation | Security inspection apparatus, security inspection method, and program |
| CN117707704B (en) * | 2023-12-20 | 2024-08-06 | 慧之安信息技术股份有限公司 | Java virtual machine configuration method and system |
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| US20130097357A1 (en) | 2013-04-18 |
| CN103064723B (en) | 2016-01-20 |
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